Figure 27-24 shows three sections of circuit that are to be connected in turn to the same battery d L---------~~=----t Fig. 27-23 Question 10. via a switch as in Fig. 27-15. The resistors are all identical, as are the capacitors. Rank the sections according to (a) the final (equilibrium) charge on the capacitor and (b) the time required for the capacitor to reach 50% of its final charge, greatest first.
Chapter 28: Physical Optics Interference and Diffraction If two waves occupy the same space, their amplitudes add at each point. They may interfere either constructively or destructively Conditions for dark fringes (destructive interference) in a twoslit experiment: dsinα = m− 1 λm=1,2,3,… o Above central bright fringe: ( ) 2 1 o Below central bright fringe: inα = ( ) 2 λm=−1,−2,−3,… Interference is only noticeable if the light sources are monochromatic (so all the light has the same wavelength) and coherent (different sources maintain the same phase relationship over space and time) Interference will be constructive
